Mark subnetwork field in container cluster as computed (#1061)
Mark subnetwork field in container cluster as computed (#1061)

* Mark subnetwork field in container cluster as computed

* make fmt

hashicorp/terraform-provider-google-beta,terraform-providers/terraform-provider-google,terraform-providers/terraform-provider-google,drebes/terraform-provider-google,terraform-providers/terraform-provider-google,hashicorp/terraform-provider-google,drebes/terraform-provider-google,rosbo/terraform-provider-google,ubschmidt2/terraform-provider-google,hashicorp/terraform-provider-google,hashicorp/terraform-provider-google,terraform-providers/terraform-provider-google,ubschmidt2/terraform-provider-google,rosbo/terraform-provider-google,rosbo/terraform-provider-google,ubschmidt2/terraform-provider-google,rosbo/terraform-provider-google,hashicorp/terraform-provider-google,terraform-providers/terraform-provider-google,hashicorp/terraform-provider-google-beta,drebes/terraform-provider-google,hashicorp/terraform-provider-google-beta,ubschmidt2/terraform-provider-google,hashicorp/terraform-provider-google-beta,drebes/terraform-provider-google